Control shared tmux session

run-tmux.sh

if [[ $# < 1 ]] ; then
    echo 'Usage: ./run-tmux.sh <start|stop|"command">'
    exit 1
fi

SESSION_FILE=tmux.session
SESSION_NAME=shared

COMMAND=$1

if [[ $COMMAND = 'quit' ]] || [[ $COMMAND = 'exit' ]] || [[ $COMMAND = 'stop' ]]; then
    tmux -S $SESSION_FILE kill-session -t $SESSION_NAME
    exit 0
fi

if  [[ $COMMAND = 'start' ]] || [[ $COMMAND = 'run' ]]; then
    tmux -S $SESSION_FILE new -s $SESSION_NAME -d
    exit 0
fi

if  [[ $COMMAND = 'attach' ]]; then
    tmux -S $SESSION_FILE attach -t $SESSION_NAME
    exit 0
fi

tmux -S $SESSION_FILE send -t $SESSION_NAME.0 "$COMMAND" ENTER